Patent · US Active

Apparatus and method for in-situ calibration of a photoacoustic sensor

US11275059B2 · kind B2 · utility

2Cited by

7References

20Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Stefan Kolb · Unterschleißheim, DE
Alfons Dehe · Reutlingen, DE
Jochen Huber · Wolfach, DE
Franz Jost · Stuttgart, DE
Horst Theuss · Wenzenbach, DE
Juergen Woellenstein · Glückstadt, DE

Key dates

Filing date	Dec 2, 2019
Grant date	Mar 15, 2022
Priority date	—
Expiry date	Apr 12, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG01N2291/021
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An apparatus for in-situ calibration of a photoacoustic sensor is provided. The apparatus includes a calibration unit that includes at least one processor configured to calculate calibration information. A light emitter of the photoacoustic sensor is configured to emit an electromagnetic spectrum and the photoacoustic sensor is configured to provide at least two measurement signals based on at least two electromagnetic spectra. The calibration unit is configured to compare the at least two measurement signals to obtain the calibration information and apply the calibration information to the photoacoustic sensor to perform the in-situ calibration.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.